package com.sky.aspect;
import com.sky.context.BaseContext;
import com.sky.enumeration.AutoFill;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;
import  com.sky.constant.AutoFillConstant;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

/**
 * @author 陈俊宇
 * * @date 2025/9/17
 */
@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    /*
    * 切入点
    * */
    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.enumeration.AutoFill)")
    public void autoFillPointCut(){}



    /**
    * 在通知中进行公共字段赋值
    * */
    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint) {
        log.info("开始进行公共字段自动填充");
        System.out.println();

        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        AutoFill autoFill = signature.getMethod().getAnnotation(AutoFill.class);
        OperationType operationType = autoFill.value();


        Object[] args = joinPoint.getArgs();
        if (args == null || args.length == 0) {
            return;
        }
        Object entity = args[0];

        LocalDateTime now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();
        if (operationType == OperationType.INSERT) {
            try {
                Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method seUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setCreateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

                setCreateTime.invoke(entity, now);
                seUpdateTime.invoke(entity, now);
                setCreateUser.invoke(entity, currentId);
                setUpdateUser.invoke(entity, currentId);

            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
    }



}
